sbc 350 bert fly wheels

[FAH-Q]

dose any one know where you might find a Bert fly wheel for a 1 piece rear main seal sbc 350 internal balanced. i have a internal balanced fly wheel for a 2 piece rear seal and its way to big??

[racin6mod]

pitstopusa.com bert coupler for new 3'' chevy pn ber7-nc $72.94 brinn aluminum one pc rear seal pn br173055 $46.94 not sure way they list a bert and brinn as two different couplers I've used the same coupler on both trany's