The block to be bored for the actual pistons.
Send to Millenium for nikasil plating inside bores. Look almost like chrome.
Maybe honed with a diamond tool after nikasil?
Here my block Mike prepared for me.
I ordered pistons from Dynoman they shipped to Mike. (Plus some gaskets)
Good idea to order 2 equal sets of pistons since the block will outlive the pistons?
A set of extra rings for eventual mistake too


Photo of the test assembly without rings. Assembly lube used.
Final assembly got all cleaned up and motor oil on bores and rings.
Cyl studs came later. The 4 inner were fastened before block.
More space for the circlips and ring compression.
When on, the other studs were added.