Hey I have a 84 GSL-se thats been wrecked pretty bad from the side and I have a 84 GSL thats almost showroom clean. I want to swap out the 12A for the GSL-SE 13b setup. Anyone know how to do it? I know its pretty straight forward, I've done the suspension swap before so I know how to work on 7's. I was told something about using the entire crossmember that sits under the motor and goes from frame rail to frame rail. I was told I could remove the one from the GSL-se and it would bolt in to my 12A chassis. Is this correct? Can I do that?
Let me know if anybody has info on this. I would much appreciate it!!!

 

i did the swap last summer, i can answer most of your questions. pm me.

 

Couldn't you just buy the adapter bracket that racing beat sells and skip the swapping crossmember part? I am curious myself because I have seen the crossmember swap mentioned before but don't understand why it is nessesary? Anyone?

 

The 12A and 13B are different lengths. If you swap it out without the matching cross-member your shifter will be off as well as the drive shaft.

 

Yes I understand the different lengths but doesn't racing beat sell the 13b into 12a chassis bracket to account for the longer engine without swapping the crossmembers?

 

you can choose either ways: swapping the crossmember or using the special RB bracket (or like I did for my TII swap: modify a 12A one)
the crossmember swap will be a bit more work, but since you have all those parts it'd be cheaper. What you cannot do is use the GSL-SE bracket in a 12A chassis (different crossmember)
other then that: this should be a rather straight forward swap indeed.