Looking For Forged Piston Recommendation

Diamond racing pistons makes (part#5001) 645$ 4,07 piston for 3.31 stroke. 60cc->9,7 cc, 65cc->9,2cr, 70cc->8,8cr. there's no many manufact. who makes stock forged pistons for 340

http://chucker54.stores.yahoo.net/manciniracing3.html

I have diamond forged pistons in my 390 stroker and i'm happy:-D​