Originally Posted by
87turbodance
Next issue might be axles. The passenger axle likely doesn't have the teeth cut into it for the speed/distance sensor. The newer A604 cars/vans use the output speed sensor in the A604 for the wheel speed and then the SBEC sends this info to the tachometer. This SBEC isn't setup to read from the traditional speed/distance sensor in the passenger side extension housing.
The passenger axle may also be a different length and require a custom axle to be machined to fit the A543.
I haven't held the parts in my hands but from doing some reading the 96-00 passenger axle seems to be significantly longer the a '90 axle that would use the traditional passenger extension housing.
So, in my opinion, the most likely way to go, assuming you can find a passenger axle that will work and you can find pedals that will work is to convert to OBD1. You will still need to fab 3 motor mounts, your odometer/speedometer will no longer work and you will need to do some serious rewiring.
Swap would awesome but there are some big hurdles in my opinion. If someone knows something I don't please share :)
I looked into swapping an A543 into a cloud car and found the same basic issues.