About to put the newly rebuilt 350 back into the car, but before I do that, is there any power adders/bolt ons I can still do? I believe I covered almost everything but roller rockers, rear end gears, and shift kit which I plan on doing later down the road. What I did was put #62 Heads on, Headers, Edelbrock Performer Intake and Carb, 465 lift/298 duration cam, Flat Top Pistons, tight 2,500 rpm stall torque converter and .40 overbore on engine. Anything else to add some HP or better performance? No Nitrous, Supercharger, Turbo etc, I want it all natural!!! lol  

what gears are in the rear now?? also what trans? and carb?  

Have an O2 bung welded in so you can measure A/F ratio. I have an Innovate and I knocked off .3 seconds in the 1/4 mile by not running so rich. And run a Qwick fuel carb . Awhile back I won an engine from Hot Rod mag. It cam e with an Edelbrock carb. Bolting on a Demon out of the box with no tuning the engine gained 25 hp.  

I believe the gears are 3.08's but I haven't really looked to see what I actually have. I plan on either getting 3.42's or 3.55's in the future. Currently running bone stock TH-350, eventually want to put in B&M shifter in along with the transmission getting rebuilt and edelbrock carb 600 cfm (I did covert from 2bbl to 4bbl). Ill have to look into the O2 idea!  

The O2 sensor and Innovative is worth its weight in gold (even at several hundred dollars)!  Especially on a non-stock setup.