Si A/C mounting brackets needed to swap into EX

I am having a B16A2 swapped into my 2k civic ex and they ran into a problem. They said they have to order the A/C compressor, lines, and freon in order for me to have A/C. It's suppose to cost $292. Is this neccessary?

i went to http://hybrid.honda-perf.org/tech/6gtech.html, this is what they said as far as A/C and what is needed for this swap:
10. Del Sol VTEC/99+ US Civic Si A/C mounting bracket
- to match your AC compressor make. ie. Nippondenzo (only if you want AC)

does that make sense? is there not an easier way to retain the A/C than spending the $292 for the compressor, lines, and freon out of the Si???