Hey fellas... It's mighty cold up here in Wyoming and all I can do is plan for more fun this coming Spring. I have some ideas on how to get a few more ponies outta my 355, but I'm not sure it's worth the $. Here's what I have to work with on my '72: 355 ZZ4 rebuild...stock shortblock Isky 225/234 at .050 .505/.530 hydro roller Profiler 195 heads direct from Profiler, 64cc chambers for 9.7:1 compression (running .038 quench) 1.52:1 Comp Magnum roller tipped rockers Weaind Stealth dual plane intake 650 Speed Demon VS carb Beat up 1 5/8" full length headers (numero uno on my replacement list...the primaries are smaller than the Profiler's exhaust ports by about 1/16" all around) Magnaflow 2 1/2" exhaust with X-pipe M-21 four speed Centerforce dual friction clutch 3.73 rear with Eaton posi and Superior axles The car is fast and keeps up with my buddy's 2002 LS1 Camaro that runs 12.4's at Bandimere...until 4th gear and he starts to pull away. I'd like to think that I would be well within a half second of him in the 1/4 mile, but I honestly don't know (we have had some fun on some desolate Wyoming highways though!). It is a street car through and through so I don't want anything radical. I'd like to get some more power without nitrous. Here's what I'm thinking: -Send heads out for mild porting...would like to send them to Chad Speier (not for full porting though) -Have heads decked to 62cc for about 9.9:1 compression (that's as small as you can go with the Profilers I think before you get into the valve seats) -Have the intake manifold ported and port-matched (I've already notched the plenum btw) -Throw on some 1.6:1 full roller rockers Is this worth the expense or not? Do I stand to make much more power? If not, what would you do first (other than replace the headers)? *I'm not considering a cam swap...I run power brakes and it will stay that way. Also, I do not have a cowl-induction hood...I can't slip in an intake any taller than the one I have now nor can I use a spacer. I like the mild sleeper look. I also have a full Holley HP EFI TBI set-up (yes, the new Holley EFI stuff) that I can throw on the car, but that might take the back seat to a few other things for now, but EFI is in its future for sure * Advice? Thoughts?