well, according to the ebay auction i just looked at (a 408 stroker) its bored out at 86.95mm. the 400 stroker (396cc) is 84 mm bore. so if the 408 stroker is 86.95mm bore, the stroke would have to be 68.5mm, compared to the warrior's stock 64.5mm stroke (a difference of 4mm, which is what it says on the auction). if i remember correctly, the hotrods stroker is a +7mm stroke. i would think that it would be better to do the 400 stroker with an 84mm bore instead of 86.95mm bore so you have more cylinder left. not sure what the warrior can be bored out to before it gets weak though. where are you looking at this 408 stroker? its not ebay is it?