I have a stock stroke forged Eagle crankshaft for B16 blocks, or you can use it in B18/B20 blocks with H22 length rods which would be a great reliable high-rpm setup. $250 firm. Here's what Eagle has to say:

"ESP" Forged 4340 Steel Crankshafts feature exceptional strength and quality at a reasonable price. Our cranks are forged in a non-twist forging and undergo a multi-stage heat treatment process as well as stress relieving, shot peening, and nitriding. They are magnafluxed and sonic tested to insure quality. We micropolish each journal to a 3 or better R.A. On all journals, a 0.125" radius is used to increase the strength, so chamfered bearings must be used. The perfect choice for engines up to 1500 HP !! Approximate weight is 31-34 pounds.

Eagle Part # 1630311772
3.031 Stroke
0.945 Journal Width
1.771 Rod Journal