I just put a 150 shot in a buddies car. the car has a walbro pump and tr6 plugs.

What should I Gap the plugs at? can I put a 175 fuel jet in and just spray it right off the bat?

 

gap should be around .032-.035, also I wouldnt go in hitting it with a 175 shot off the bat. Start slow and work your way up. Start with 100 or something. Even if you jet the fuel side more rich it isnt really safe until you start lower and take a look at the plugs and make sure everything looks good. Every engine reacts differently.