Gents,
Please resume your seats......
I am not familiar with the s/b head numbers such as 302s.
To my American friends: does it ever occur to you that Hysteric might live in a country other than the US where parts are much harder to come by. And cost MORE. Heaps more. A TF flow head that you pay $1000 for would cost me over $1400, plus shipping to get it here [ Australia ]. Petrol here is $7.30 a US gal. That is std. Premium is $8.00. You have to be a dedicated die hard to be in this hobby. A rich diehard helps....
You guys in the US just do not realise how LUCKY you are with abundant places to buy parts, & the choices you have, & how cheap they are compared to the rest of the world. Some suppliers in the US will not ship overseas, it is too much of a hassle for them. So we have to find another way...
Hysteric might well be using 302 heads because that is all he can get in his part of the world.