Look just like mine, real rough in the exhaust. With stock retainers/keepers I was way under the 1.64 spring height MP advertises, more like 1.595, but consistent. With hughes retainers (advertised plus 0.125, they were actually almost perfect at plus 0.045?) got me 1.64 for hughes springs spec'ed for 1.66.

I spent maybe 5 hours cleaning up and polishing the exhaust, definitely a lot a meat in the casting to machined area of the exhaust port, and around the valve guide.

The intake I only spent 3 hours (got the feel for the bit)as it was much "cleaner?" around the casting/machined area, but I did shave a good 0.080 off the pushrod pinch, and gasket match. Didn't spent much time at all around the valve guide, much more intimidating to me, hard to control the bit so I left it alone.

I also eliminated thread bulges where ever they could be found. This was my first porting (if you can call it porting).