What could be a decent buy on a 454/Procharged

[Lenny]

http://cgi.ebay.com/ebaymotors/454-502-procharger-mercruiser-marine-engine_W0QQcmdZViewItemQQcategoryZ50442QQihZ008QQi temZ180149129687QQrdZ1QQsspagenameZWDVW#ebayphotoh osting

[Cuda]

I know Catch 22 loves his, with the same engine. I'm not sure which procharger he has. I talked to him today, he had a slight miss in the engine last time out, so he had the plugs changed. He said it was all good when he and Gina took it out this morning.