Has anyone tried these?
 

https://www.ebay.com/itm/134171813953

Just wondering if anyone has any experience with these heads. They seem reasonably priced but no advertised flow numbers.

Considering the last photo is an image listing flow numbers Eddy vs. Speed. I'd asume they are speedmaster heads, lots of into on them here.

For example: https://forums.maxperformanceinc.com...ht=Speedmaster

I use them and like them very much, you can buy them from speedmaster a lot cheaper there, and there are a couple sets here on the forums for sale I think
for $1500.00 look in the performance parts for sale back a few pages maybe.
There well worth the money.

GT

It all depends on what your goals are with motor there going on. Charlie 66 has a set for sale brand new never used.