Help.

AC Replacement - cannot find Air Handler to fit space

I have just had an installer cancel installation for an AC swap out of the entire system. Even with a closet modification they said there just was not enough space to install the handler that went with a SEER 16 system. (at least for the brand they carried.)

I have a small 1200 sf Florida townhouse that has an "apartment" sized 15 year old Goodman AW30-08c air handler upflow closet front return and 2.5 ton unit outside. All the lines and power are connected to the left side - not the front. The company that canceled did a Manual J calculation and said my unit only need a 2 ton system (interior unit with few windows and a garage with a high roof on the west end of the unit.)

The closet that the handler needs to fit into is only 36" w x 18"d x 80" h. I have modified the bi-fold door so there is 22.75" depth clearance.

I had two other companies come out, said they would do some research, and never bother to call back.

Is there ANY company that that makes a 16 SEER or higher system that will accommodate my needs? I am not so interested in Goodman, but would take that if it is the only choice.

ANY help is really appreciated.