Summit are really good. I have used them twice. Any of the distributors in the US are pretty good. I have used Summit, Bob Utler Ford, Mac Performance and Steeda. I prefer to use the phone rather than the internet. The shipping is usually more expensive than the part ! They can have it here for ya in a week... I have a Summit catalogue at home if you need one.
Parts are cheap at the moment. VISA card is giving almost 57 cents to the US dollar
I'll call a few places and see what I can find........
Update
Ok, I rang everyone I know and managed to find some close to what you want....
Parts r Us in Preston has some "Dome" topped Hyper Tec's which are a High Compression Piston.
They want $385 for them. You could actually have the domes removed and make them flat top ??? (Shave them down....)
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1995 Mustang GT - Vert
RHD Conversion, Vortech V2-SQ, 42# injectors, CAPA Chip, 18" BonSpeed Wheels, 3.73 Motive Gears, AutoMeter Gauge Pod, Pedders Springs, Koni Shocks, 13" Cobra Brakes, BBK Shorty Headers
~~ He Who Dies With The Most Toys Wins. But Is Nonetheless Dead ! ~~