Worth it to build my 273?

Hey Shane if you decide to go with the 273 I have one up for sale here on the forum. It's been broken in on a stand but I never ran it in my car. My friend gave me a 440 so I decided to go that route. It's making around 300 hp here is the link to my add:
http://longisland.craigslist.org/pts/2724858660.html
if you are interested make me a fair offer I have lots of machine work done to it the compression is at 10:5:1. Good luck with any decisions you make. P.S. the date on the block is 9/28/65. This may fit the bill. I also have a video of it running on the stand.