by no abs i mean... its not there. the truck i drive has abs but my other truck dosn't... the one with abs has the abs unit mounted on the driver side fender in back of the under hood fuse box... the other truck theres nothing.... not even the wires on the master cylinder

 

So you answered your own question. one has the box, one doesn't and your mirrors are different. Merry Christmas.

 

One probably as 4WAL, and the other is just RWAL.

 

that wasnt my original ? ... but heres another... i know my model year dosnt have obd II and that they changed that later on... so what exacly did they do, to do that, what parts/sensors did they ad, and is there a way to up grade my trucks?

 

Not without a good bit of work and money

 

... well du, thats inevitable with mopar

 

it would be more of a pain in the but than it is worth. you would have to find a 96 or 97 unless you want to go all out and swap in a newer style instrument cluster.

all dodge trucks since about 89 have had some sort of abs. my 91 is about as basic as you can get and it has rwal abs system.

 

Not easily. Sell both and buy what you want.

 

i didnt ask how easy it was... i was wondering if it were posible and how cus it would open up more options for pcm and tuning

 

Need PCM, wiring harness, and trans.... from a 96 or 97 truck. 98 and newer means a new dash, and interior harness as well. Wiring diagrams for both trucks, LOTS of time, and patience..... It is possible, but, is it worth it?

Something else to consider would be a standalone, aftermarket system.... cost would probably be about the same, and tuning would be far easier.