WHS ^
You really should reconsider using a top mount, and the small turbo like your considering. What your planning will be a very quick street car but the major limiting factor will top mount and turbo, If you want to run 10's you'll need at least a gtx3076 size turbo.
Also as far as a matching package goes, if your dead set on using a top mount and small turbo, using 272 cam's isn't a good fit, 264's or 8's would give much more usable power and torque.
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MY99 WRX EJ2.35L 720whp 9.48@147mph
https://youtu.be/c_lYEG0_Dyo
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