which motor

Which Predator motor (serial #) would be the best one to buy for a race that the only modifications are remove gov. and oil sensor and add a weinie pipe w/ stock air box and drum clutch. No cam, no timing changes, can rejet thou.
 
Are you allowed to change valve springs? My experience shows that the valve springs in the hemi are very inconsistent, so I would advise changing them if allowed.
 
It's supposed to be a stock class with a wienie pipe. We don't run this class around here, but there is a big race coming in Dec. and they are running it to get the karts from surrounding states that do run them, to come to this race. I will check on the springs.
 
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