Not to draw away from original poster's intentions, but... what I'd like to see is comparisons between Eddy vs Trick Flow. I'm building a 410 with CR about 9.5-10 (Hughes kit, engine partially built)... camshaft (flat hyd) still to be determined ...wanting wide range rpms especially strong mid-range and ability to run strong higher rpms (I do pylon AX, HSAX and road course lapping sessions).
My purchase is on-hold until ~mid-summer or end of this summer, maybe into early 2020... maybe the EDDYs are simply established and proven.
The Trick Flow heads might be too new to tell but based on the little bit that I know now I'd say the engine you are describing would be better off with ported Edelbrock heads. If you're willing to go with a solid flat tappet cam and rev the engine up past 6000 rpm then maybe the Trick Flow heads would be a better deal. The porting on the Trick Flow heads is super nice but the extra volume in the runner might kill off too much torque for what you want to do.
