OP what parts do you currently have waiting to install? What shop is working on your car/ or are you doing the work? What roads in South Lake/ Tahoe area do you like to drive? Have you been down 88 to Shakeridge and Fiddletown? Or Ice House and surrounding roads off 50? Blouch are great turbos, and I would also be thinking about a timing belt if you didn't replace that prior to your motor swap. Honestly if you daily your car up in Tahoe, you do not want coilovers, unless you get quality ones that have good dampening system and not just some megan racing/d2/tein basic,etc. I would recommend kyb's or sti struts matched with some rce/prodrive/spt springs, as well as sway bars and endlinks (which I would actually do first if you have recently replaced your struts) Regardless of what you do at this point since you aren't running 565cc sti/dw injectors, and no sti tmic you will definitely need a custom tune. You could baby your car a few miles to a shop if you do the work at home (I did this and drove ~12 miles to the shop for a tune) but it will not be running good. Most AP tunes set the injector duty cycles and amount of fuel the shot into the cylinder as a flow%, so if the AP calls for 85% flow of a 565cc injector at WOT thats 480cc with (X) amount of air to create an A/F of apprx 11-12ish, so if you ran a 650cc injector you would be placing 552cc of fuel in with the same (X) amount of air, making your A/F ratio rich which will give you worse gas mileage among worse affects. But it is fine to drive very cautiously a short distance to tune, DO NOT go drive the car hard at all without a tune, but still it would be worse for the car to run lean. More power, but harder on the motor. If you are going from an APv1 stage 2 to a Blouch 16g with supporting MODs it should be as satisfying as the jump from stock to stage 2 if not even better. Another thing to take into serious consideration is what tires you are running, both in winter and summer due to the vast change in climate. Which you may already know, just thought I would include that incase. What brake pads are you buying? And do you plan on tracking your car, or competing in any auto-x? Or is this for performance oriented canyon carving and fire road bombing?