If you do sell it, I wouldn't spend the money if I were you. You may receive a request for a refund. I'm interested in it myself, but there's no way that I'd buy it with it never being ran. Unless you guarantee a refund if there is a problem.
Look I wouldnt sell anything I didnt trust, check my feedbacks..I'm not some dumass that doesnt know what I'm doing...Ask Brad (John-r-gang) about the Intek he bought from me I built, or the drag bike with the built clone I built he bought or the wild goose Jeep4me just got from me I built...If I was worried about it coming apart I wouldnt sell it to anyone... second of all, when have you ever seen a race engine come with a gurantee?? anything can happen, the person buying it doesnt break it in properly, run it low on oil, over rev it ect ect and I'm suppose to give them thier money back?? LOL yeah....
I been building big blocks, small blocks ect since the 70's...pretty sure I have basic knowledge of what I'm doing... I am by no means in the ranks of MDB or some others on here with these little engines but I'm no idiot either... I didnt build it to sell originally, I have just since decided I'm not going to finsih the project..