hi mate i have a 1600i engine in my caddy as turbo engine bloow up and set a light any way the head on mine is started to tap far to much so im trying to fine out wot to do next ie,new lifters solid,or hydrolic but not sure if i can put hyd in with a 1600i std cam any help on this would be great ps i know i can get a cam kit from burton engines but just dont have that sort of cash would i be abe to fit xr3 cam with hyd lifters insteed as iv seen a xr3i cam on ebay for 70.oo skwid