Vans package deal, IO-360 M1B, dual P-Mags, Sensenich FP prop, I'm not as fast in climb as the constant speed boys, but cruise performance is fabulous.
In the downturn, the Vans yio-360 was the best value for me. Many shops were closing doors.
Today there are more options. Keep a close eye here on VAF and you can find a good engine. They don't come up often, but they will come up. Be ready to act quickly.
I have the 180 HP parallel valve with the intention of going faster through drag reduction and the large cost/hp difference for the 200hp angle valve.
You can troll the forums for this info pretty easily... anything other than a 'standard' Vans installation will add time and expense to work out routing details but I am very pleased that I did