Subject: Re: LS7 in a C4 - A brain storming session by bogus on 2011/3/28 19:11:34
If it helps, piggybacking is the only way to keep ASR/ABS and dash functions working right. Guldstrand has done it, but as I understand, it cost the owner some $25k to do it.
That was an LS6 from a C5/Z06.
Converting to the later LT1 harness is out of the question. It would require rewiring the entire car.