Take a look at the RHS cast iron heads.
If you have stock dished pistons, you want a smaller comb chamber to up the compression a little. Stock nominal is only 8.8, with Performers it's a calculated 9.0 and with mass air running a stock 5.0 HO auto ecu and larger mass air and injectors runs just fine on 87 octane with stock timing. And I don't know of any inline 2.02 valve heads that will clear those pistons. The twist wedge will and are a great upgrade for a street motor.
I was on a very tight budget and was going to use GT40's until I found a lo miles
pair of Ebrock Performer's with the 1.9 intake and 170 intake runners. Cleaned them
up a little and with an Explorer upper over a Ford GT40-351 port matched lower do a
fine job with a TF Stg 1, all budget items.
I think Summit racing has some inexpensive iron heads with 1.9 or 1.94 intakes - have been looking at them for a budget build for a real mild early vette top end upgrade. Their basic iron SBC heads are only $310 apiece with valves and springs.
Here's an older but very thorough head test on sbf's, and doesn't include the newer heads like the RHS etc, but can give you very good info on most of the popular heads that have been around awhile.
And here's some eye opening info on street intakes.
89 Linc Mk 7 LSC, 95 351, Ebrock hds, GT40, TF Stg 1 & 1.72, 70 MA, 30 inj's, 1-5/8 ceram short, 2-1/2" Dyno catbk, hi flo 180 stat & pmp, blue hoses & wires, 2 row rad, Taurus fan w/FAL VSC, trans filter & plate cool, 2700 stall, 3:55's, 17x8 Cobra & 255x50's, built 4R70W & Baum TCS