HS4's vs. HIF's for RB

["Erich" <erich@mail.NGBM.COM>]

Hello all, 

 I am looking at converting my 1980 RB to dual SU's. Does anyone know what the 
differences are between HS4 and HIF carbs? Are there any pro's or con's for the 
use of either in an RB conversion?

Thanks, 

  Erich - 1980 MGB (Brooklands Green)