Hi, have a Garrett T3/T4E 57 trim, .63 A/R turbo on a K20Z3 right now. System works quite well. Boost comes on with a bang around 4000 rpm. I also have a Garrett GT2860RS I was thinking of trying. Would the 2860 be a better choice? looking for boost to build a little sooner and be more linear. Years ago I replaced the K26 turbo on my 911 Turbo with a K27. The K26 came on with a bang at 4000 rpm, whereas the K27 started building boost ast about 3000 rpm and was much more linear. Thoughts?