My build
 

Mods im doing to my 88 supra during/after i rebuild the engine over the winter.
I need help im pretty new and i'm probly missing a couple things

$187 2.0 mm Metal Head Gasket,
GReddy Metal Head Gasket: No Limit Motorsport
$119 ARP studs,
ARP Main Stud Kit: No Limit Motorsport
$999 57trim ct26,
CT26 Turbo Upgrade 7MGTE & 3SGTE
$202 Blow off valve,
GReddy Universal Blow-Off Valves : Blow Off Valve
$32 Mounting Flange
GReddy Universal Blow-Off Valves [Part#: 11900450]
$599 Divorced downpipe
BIC Performance Products
$52 Re-routed wastegate pipe
BIC Performance Products
$600 3.5" BIC Thunder Exhaust,
BIC Performance Products
$97 Turbo Timer
GReddy Turbo Timer: No Limit Motorsport
$17 Turbo timer harness
GReddy Turbo Timer Harness: No Limit Motorsport
$410 Boost Controller
GReddy PRofec B Spec II Black Boost Controller: No Limit Motorsport
$73 Speed Cut Controller
GReddy Univ. Speed Cut Controller: No Limit Motorsport

Any other suggestions? How much hp do u estimate i can gain from these mods?