Thank you for your reply , that is the kind of information I was looking for. Things like has the engine been ported, piston relief cut or lightened , headwork ???

"IF" still original to the work done in 06 ... they should be Text Book copies inside of whats been shared within thread article.
Some minor changes where being made on intake & exhaust timing pending original user application.

Was ONLY doing "Full Race" engines at the time ... so it had the full enchilada treatment.

If virgin engines still original to work done, STRONGLY suggest taking em apart and putting in fresh Bearings and a Ring making sure big end of rod is not Blue

Have fun !

That`s fantastic !!! I did forget one question lol What is the meaning of the #1 & #3 engraved into the engines next to the company name ? Thank you

Simply denoted & kept track of WHO engine belonged too and kept major parts that may or may not have specific tune changes from another.
On any given day when engines were getting done there could have been upwards of 8