The SZ49 install is a success. The car was completed on Friday, but I ran into a few complications with coolant leaks. The coolant feed and return lines were both leaking. I purchased new clamps for both and no more leaks.

To get it running, I purchased an HKS downpipe with the straight 3-inch, no bellmouth. The wastegate fits without issue.

Current mod list:

HKS 3" Downpipe
HKS Carbon-Ti Catback
Perrin BIGMAF short-ram intake
Perrin Light-weight crank pulley
EcuTek reflash by TopSpeed
TurboXS front mount intercooler
Perrin modified injectors; 816cc
SZ49 turbo
Ultimate racing uppipe w/ tial 38mm wastegate
Perrin EBCS
Denso 1-step colder iridium spark plugs
Walbro 255 lph fuel pump
Kartboy Short-shifter and bushings
Whiteline Steering rack bushings
Whiteline Anti-lift kit
Whiteline Rear differential bushings
Cusco catch can
JDM STi tranny mount
JDM STi pitch stop mount
JDM STi pink springs
Kartboy exhaust hangers