Advice on replacing Conv Top 1988

Hi,

I am looking into replacing the convertible top on my '88 GT.

Is it a job that I should consider doing myself? If so, where's a good place to buy a quality top at a good price?

If you think it's beyond the typical di-it-yourselfer (I'm fairly mechanically inclined...) then could you tell me what a fair price would be for a shop to do the install for me (price of materials plus labor)...

I'm in the Southern California area...any suggestions as to a good top shop?

Thanks for reading, Rusty