Hemidenny K member club?

ok for you in the know.i have been looking at the hdk system for awhile and emailing denny.i'm doing a 69 valiant and want a semi pro touring car with some sort of small block.besides getting rid of a lot of stuff that's in the way what are the other advantages - handeling etc over doing a major upgrade on the factory stuff for about 1/2 or more of the price of the hdk

anybody?