can either go for dynamat which is good from halfords can get some dynamat extreme for 15 quid which is enought to do around the woofer in each door just or get some from car audio direct second skin i have been suggested by people in the know
heres a link
http://www.caraudiodirect.co.uk/seco...k2cp32rkjibip2
enought there for a couple of layers in each door so alot more which is better of course
im told this is good stuff aswell and would defo say get it as im getting it myself when i get my components hopefully soon