i think i had heard the xlr is based on the corvette chasis, not shure if its C5 or C6. If this is the case then maybe the motor and trans mounts would be the same? Would be a bad *** swap. You could always supercharge the northstar....
06' GMC CCSB SLT: Some bolt on's, 20's, tuned by slowhawk
Black SS 6spd, ls6 383 SD tuned, fab 9, suspension, tuned by Slowhawk Performance.