dash a/c compressor

[eric.henning]

I see on the GMCmart the standard A-6 compressor is listed. Is this a drop in
replacement? does it use the origianl hoses from my Frigidaire unit? This is
for a 73 455. my compressor slung all it's oil and lost freon. I plan on
replacing the compressor and drier and converting to 134a.

thanks

eric.henning