i run a BC 2.9 e85 always 9/1 comp
presicion 7675 largest rear housing
best turbo for Hpattern/1000Hp
makes 1000Wheel at 40psi
like i said the large was a big thing for me, but original goal of 1000hp is more important
7275 may struggle making over 1100 (maybe 1000hub)
some bearable boost at 4300 and war at 5300
off course there are factors that improve spool or lean towards power like cams, pipping size etc
thing i found most benefits in traffic is shorter diff gears, if you have a 3.2 expect it too feel 3.4 with gears AND not too mention your target boost setting is reached sooner (time not rpm)
with more cubes like yours i’d definitely go the largest rear housing on whatever turbo you go, and remember there’s a 9k redline so plenty of power (unlike some other motors that don’t like more than 7-7.5k)
7675 sportsman is the perfect pic for 1000hp BUT “1100” maybe a 7685 if the power goal is more important than the low down power (like it is with me)