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MSeriesRebuild wrote: A word about driver's side doors taking stress because of the spare tire mounting. This just doesn't hold water. The spare is not mounted on the door in any way. It is mounted totally on a separate rack that is independant of the door, it has a separate latch mechanism that must be released to swing the spare rack out in order to open the door in the conventional manner. I've never been a fan of the so called door mounted spare, I think it is absolutely a nuisence to deal with every time you open the door and would much rather have the spare either on an in bed mount or a mount in some custom location. As far as the B1 spare mount having anything to do with the shortage of NOS driver's side doors, I see no relevance at all. I guess if you think of it logically, it may even offer physical protection for the door.

MSeriesRebuild wrote:Just a couple of things to add.

The T/case (NP200) is one of the best cases around as far as bullet proof components go. After going through one and bringing back all the correct specs, it's an amazing box. We have also found that a really good lubricant (such as Royal Purple 40 weight synthetic) will absolutely make a very significant difference in the operating temp. Running the originally spec'ed 90 weight gear lube just isn't smart any more. We have also done an auxilary oil tank with a thermostatically controlled oil pump and cooler. More than doubling the small original oil capacity of only 2 1/2 quarts. Reserve oil supply + giving it a short rest in the auxilary reservoir before it is reintroduced into the case will make a HUGE difference in temps. We had opportunity to test the system in ambient temps of 100+ degrees. I built the system myself and it fooled even me at the huge reduction in temp that I saw. We did a monitoring system so we could monitor the actual oil temp and pilot lights to be able to see the pump and cooler fan functions on the panel while driving. It is an absolutely worthwhile system at a fairly reasonable cost. You may ask why go to so much trouble with this, well my reason was that I simply have not seen a case I like better than the NP200 in these types of applications. Our trucks with the QSB4.5 Cummins will cruise freely at 75+ MPH.

A word about driver's side doors taking stress because of the spare tire mounting. This just doesn't hold water. The spare is not mounted on the door in any way. It is mounted totally on a separate rack that is independant of the door, it has a separate latch mechanism that must be released to swing the spare rack out in order to open the door in the conventional manner. I've never been a fan of the so called door mounted spare, I think it is absolutely a nuisence to deal with every time you open the door and would much rather have the spare either on an in bed mount or a mount in some custom location. As far as the B1 spare mount having anything to do with the shortage of NOS driver's side doors, I see no relevance at all. I guess if you think of it logically, it may even offer physical protection for the door.