Most big blocks use a tapered crank (SG) and you will need a new flywheel.
The stock CEN bells will work on the big block but will wear out faster, especially if you use the ones with aluminum pinions.
Depending on what engine you use really determines the engine mounts. People have used the stock CT4 mounts without clearance issues but Poor Judgement couldn't use them with his SH .28. The STS .28 is really similar to the SH but it might have more clearance than the SH. If you are looking at the STS (mentioned in another post) I recomend e-mailing http://www.racernine.com/sts.html and asking he is familiar with both the SH and the STS engines.



rolland