I have a while to sort this out ,my son is pushing the LS1 six speed also,this will be moms car so we'll see ,it took me a while to get the manual transmission ,she wanted automatic ,I think an LS1 with a 6 spd will be awsome ,We have an old El Camino we use at the shop and I wanted to put the 454 in it. I guess I just want a big block 4 spd car and I am not a Nova fan .Maybe by the time we get this done a first gen camaro will fall in my lap ,now that would be awsome with a 454 4spd