Add it yourself...
replace the front shock absorbers on a Toyota Celica GT4 ST165 and ST185http://www.gtfours.co.uk/how_to/shocks/front/front_shocks.htm
replace the rear suspension bushes on a Toyota Celica GT4http://www.gtfours.co.uk/how_to/rear_bushes/rear_bushes.htm
Toyota Celica GT4 ST205 Super Strut suspension replacementhttp://www.gtfours.co.uk/how_to/sstrut/sstrut.htm
Tie Rod End Removalhttp://www.celicatech.com/forums/showthread.php?t=6816
change the suspension springs on a GT4 ST165http://www.gtfours.co.uk/how_to/springs/springs.htm
Supra Subframe Swaphttp://www.celica-gts.com/resources/how-to/supra_subframe_swap.html
Supra Rear AGXhttp://www.tscperformance.com/supra_rearagx.html
Supra Suspensionhttp://www.tscperformance.com/supra_suspension.html
Installing a Rear Sway Barhttp://www.6gc.net/howto/install_rear_sway_bar
more . . .
ST184 PS Pump Replacementhttp://www.celicatech.com/forums/showthread.php?t=31712
Power Steering Pump & Hose Removalhttp://www.celicatech.com/forums/showthread.php?t=19104
Change a steering rack gaiter on a Toyota Celica GT4http://www.gtfours.co.uk/how_to/steering_gaiter/gaiter.htm
The Car Steering Biblehttp://www.carbibles.com/steering_bible.html