4340 forged 4.0" crank (Eagle is the least $&#036
Eagle H beam rods, 6.125"
Pistons depend on your heads, ex. 72cc head you will need around a -15cc dish for around 9.0:1.
Do not use Moly faced rings. Use good ones like Speed Pro Hellfire.
Rings will depend on your pistons too.
These are budget items and you can spend much more; ex. Lunati crank, Howard rods, etc..