1) Were original engines mounted level or did they have a slight rearward angle??? 2)If mounted level ( no rearward tilt) does it affect ability of clutch to disengage, I was told that an engine needed to have approx 3 degrees of rear tilt to allow clutch to disengage and TOB to not ride on press plate??? 3) Also for those with carb engines if there is no rear tilt does the typical intake flange tilt the carb too far down in front and if so what is done. 4) In my case I am doing a MK11 and plan to engine w/ an 427FE and Blue Thunder medium riser intake ( as original)...does anyone know if carb flange is level or tilts fwd w/ this intake? Tks Steve