need some more hp

[GSXRACER20PSI]

i have a bone stock 1990 gsx with 85,000. i want like 40 more hp with out raising the boost. i want to put on intake and a catback and a down pipe will this give me the 40 hp i am looking for. if not what else should i get to make that extra 40hp?

 

[pokkii]

http://www.dsmtuners.com/tuning-guide/1gturbo/

That should give you what you need.

 

[LTUDSM]

Get the HKS Camshafts and the cam gears,it wiil give you those 40 horses