The Corvette LS1 is DBW. I am sure a conversion could be done but you would need to run some wiring and program the PCM as well. I do miss the DBW from my Vettes, I felt that it was more responsive than the cable method.
There's two modules you'd need to acquire, related wiring harnesses, and of course reflashing the PCM as a 'vette ... Once that's done, I'm not sure your BCM, dash cluster and radio will still operate properly.. Sure is a lot easier to just get the right throttle body to begin with
Actually, the LS2 intake will fit on the LS1. Some may want to wait for that option. There is an article in Chevy High Performance mag discussing the LS1/LS2 part interchanges...specifically, the throttle body swap and use of Ls6 heads.
From what I've read, the LS2 intake offers very little over our LS6 intakes. You can always put a larger throttle body on the LS6 intake. There's also a couple of companies making adapters to fit our style throttle body on an LS2 intake. There's a lot of good info over at LS1tech.com on LS1 vs LS2 conversion.
My Silverado had DBW and I hated it.... For me and I might be a Gump if I didn't have my heal resting and went over bumps it would bounce my throttle. I like the feedback from a cable because DBW felt too much like an arcade game....
Just my 2 cents (She took the rest!)