I have sold a few ls1 swaps in the past. They are not cheap like honda parts you will pay about 1000$ bucks more with a t56 they are highly sought after I have been holding on to a camaro t56 for 5 years now for my next project i have turned down 1k offers for it! Honestly I would do a lq9 and swap the intake manafold to a ls1/ls2 style but you would still need the front accessories. Also a automatic 4l80e with a few mods will handle almost any amount of power you throw at it!