Mercruiser 3.7 distributor & fuel pump questions

[gw204f]

Thanks.

For the distributor shims, would these be correct?

http://www.summitracing.com/parts/MOR-26140/


I've also found three different part numbers for the riser gasket on Merc's parts express. 18272 and 97542, which is superceded by 856705. Do you know which one is correct?

I am assuming it's 18272 as it has only has one scalloped side.

18272


97542/856705



Thanks for helping me figure this stuff out!