5.3 LS A/C compressor mount in 72 chassis

[hotrodwest]

I'm putting an 04 5.3 LS engine out of a Avalanche into a 72 Chassis. I reading the various build threads I know I need to clearance the frame for the compressor lines. The problem I have is the engine mounts interfere with the compressor mount. I have the flat plate mount adaptor that mounts the LS engine in the old chassis but it puts the engine mount too far farward on the engine for the compressor to mount. Any suggestions? Thanks