For those who may have missed it, club member David Tuck's 150HP aerobat is currently listed in the classifieds for $43K.
Having seen this airplane in person at Clinton, I can attest that it is a nice one, quite similar to my own "Superbat" but with much better paint. Dave's Aerobat is a A150K, the only model conversion that is allowed to keep full Aerobatic certification with the big motor.
An A150K with the 0-320 conversion is extremely rare, there are likely less than a dozen of these in existence. In my opinion, it is the best model for a 150HP conversion. Because this one has long range tanks and only 150 hours since major (New FWF in 2006!), $43K is a very fair price, you could not build this combination for less than $50K (and probably a lot more). It has decent radios, interior and glass too.
http://71.148.0.203/Cessna/cls/FMPro?-db=web%5fclass.fp3&-format=p%5fdetail.htm&-lay=p%5fdetail&-sortfield=Year&-sortfield=StateDisplay&-sortfield=Price%20Display&Type=For%20Sale%3a&-op=cn&Title=1&-op=gte&Price%20calc=0&-op=lte&Price%20calc=99,000&-max=20&-recid=39187&-find=