Steve , I have several different engine combinations that may suit your needs . How fast you want to go will depend on your budget, however I have new 1916cc engines on the shelf priced @ around $ 3970 . For this you will get a 100% brand new engine , built from valve cover to valve cover and from front pulley to flywheel . These engines have low compression @ 8.3 and have stainless steel 40mm x 35.5mm valved heads . I also have several other engines that are built using used/reco parts that will save you money if you want to go that way , ROD , 02-42729920 .
More boost + More fuel = More power
1968 Beetle fastest run 8.96 sec @ 161 mph 4th Nov. 2001
2010 New Beetle 8.12 sec on 8th march 2014
http://www.rodpenroseracing.com.au