iva had the gt2560r, the gt3071r, and now the gtx2871r.
Make sure you size the turbo appropriately for power goals (and also be sure to build the engine accordingly). Turbine size is very important.
The 60mm house is easy to fit.The 71mm compressor housing is big and hardly fits in the stock position. For the gtx i had to grind the housing in order to clear the engine block. The coolant tubes on the block will need some manhandling to get it to fit. Keep an eye on the elbow (by pass hose) Its easy to damage it, would be a good idea to put a new oem one on.
Dont cheap out on the wastegate actuator and get the appropriate one from atp turbo or something. Get a longer bolt for mounting the wastegate so you dont strip the compressor housing. I use: GRT-WGT-008 from atpturbo. positioning is the wastage is a PITA so take your time and get it right. Get new crush washers for the banjo bolts if you want to prevent leaks.
i dont suggest stainless steel hardware, it tends to stretch/creep at high temperature.
I use these and they are probably the best studs i've ever used (better than the arp ss kit ), however they are a one time use, if you disassemble replace them. i always order an extra 10-15 studs:
https://www.belmetric.com/s8x38e-metric-stud-p-1379.html?zenid=vr1thhus9lqgd7vmcb0ehkcjq4&cPath=9_71
get nordlock washers and arp nuts(the black ones, not the SS). These you can reuse indefinitely.