LA Block/Magnum Heads

Jesel was closing out 7.650 pushrods a couple monthes ago for $3 each (thats $48 a sat vs $98 from summit)
http://www.jesel.com/innovation/
http://www.summitracing.com/search/...l-Length-in/7-650-in/?keyword=summit+pushrods

I am planing to put my set of stock magnums on a 1967 LA318 with a comp 454, 454, 218,218 @ 50 cam and crosswind intake topped by a 600cfm edelbrock,
(because it's all stuff I have collected CHEAP!) and drop it in my 66 barracuda, with an A-833 and 7 1/4 with 29?:1 gears, 205/70-14 tires dual exhaust using 1 7/8" dakota manifolds, (unless I find a set of 2 1/8" ones cheap) hoping for something a little hotter than a 273 commando, 235 HP + that will run on 87 octane and still get decent fuel mileage