When I bought my kit it was the 1 of 10 in the first run of kits, the fit and finish is perfect, and it's tight quarters for the twins. Some of these kits have been converted to a wastegate system. That didn't come out until after mine were installed, and I live so far from IdahoeCTD to get the wastgate install that really wasn't really an option. Wester will be my solution with the control that Lyndon has over the VVT. Knowing what I know now the simplest way would be to get a used LB7 turbo and get a hybrid kit for the plumbing to hook everything up. I'm not sure if you could just order a LB7 kit and buy a used LB7 turbo and mount it on a LLY?
Don't get me wrong I know this system will work, It just taking longer to work out the bugs.
Also for anyone planing on installing the Twins, here is a couple of suggestions : Install headstuds when your getting the kit installed, If you like bling have you stock and big turbo exhaust housings ceramic coated before the go on ( keeps away the rusties), buy a prefilter for the AFe these things suck so much are the filter life is reduced, also plan on changing you oil every 3500miles if you tow. and get two 60 psi boost gauges, with the head studs you want to crankup the boost.