200 xflow rods ID
Got an old XF off a guy the other day, was supposed to be a 250ci, turned out to be a 200ci - I think going by the big 200 letters on the crank. I wanted the motor as a donor for my race car and needed a 250ci. So I bought an XE 250 series 2 with a 250 in, but when I pulled the head off it has flat tops in it with large (about 10mm in size) numbers "4" and "5" stamped into the tops of each one. I don't think they are piston ordering numbers because the same numbers are on the tops of each one and there are no oversize (eg .030") numbers anywhere. The motor's not out yet, so I haven't looked inside.
Firstly, how do I ID 200ci rods by looking at them without a vernier, is there a physical noticable difference?
Secondly, I'm told that xflows never had flat tops, what should I be looking for, have I got lucky with some high comp pistons?
Got lots of free XE wagon parts if you live in Perth by the way, looking for a good redline or similar manifold to take a holley.