I found out that a guy is parting his 400 Sport, and I am in the process of getting his # to call. It has a big bore jug, but I don't know to what extent. But it is used, and I don't know the condition of it at this time. But what would sound like a good round number to pay.

 

It depends what size bore, Who did it and did they port it also?? If it is already at the max I would say pass, If not and it can be machined 1 or 2 more times and has a port job already and dosent need bored now I would say 100 to 150 would be fair, Just be careful and check it out good maybe see if he would let you take to your local shop and have it checked just to be safe ;0