SMELLING ANTI FREEZE...what can it be??

[1st7]

I saw an ad for an '87 RX 7 with a rear seat , is that stock and can i put the seat in my '88 GXL to replace the storage boxes that are there now and are they hard to find????
And do you know anyone who reproduces the Factory stickers for the front( MAZDA) and side logos (GXL) for the RX7. Lastly, Im starting to smell coolant and the shifter is getting hot when its been driving for a while but i dont see any leaks. And it sounds like the U joints are maikng noise when i shift..EASY FIX?? Anyone know of a good MAZDA shop in So Cal.???