same can be said about your beloved 340's. Stock.... they were 14 second cars in light A-bodies. For a few dollars into a 318 (not even the cost difference between buying the 340) you can beat the 340. Give my 318 Duster 3.55's and I'll race any 3.55 geared 340 Duster that's stock - and I have a lot less into it than if I was to buy a good running stock 340.