dont know where the flasher is mounted exactly but on my 90 you have to take off the lower panel on passenger side and the relays are mounted on the frame. of course you have to remember this is a vette so it aint easy.
. i had to look in the service manual and count over from one side to replace my fuel pump relay. that being said the flasher is probably going to be just as much a pain to find too.
there should be only one flasher for both. i think you have to wire in a relay. i have seen some advertisements for the leds and in the small print they tell you that you need this part. the lights you are getting calls it an electronic flasher. the manager of the autozone by me said he switched a car of his to the leds and didn't know about the relay/flasher and he wound up burning the wires up. best to just add it to be safe. they certainly will look great. my 90 getting fixed from the accident put a little bit of a crunch in my pocket and took a lot of my time with the repaint and all so i dont want to get the wife anymore upset and spend the bucks right now.
cant wait to see the pics. will be posting more pics soon of the 90. good luck
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the dynamic duo
c3vr life member #97
and I figure now would be the time to replace them. If not the halo style.....howabout some reasonably priced regular led's.....and a 3rd brake light led Thanks
eddie20890
Last week I ordered a pair of regular led lights and was going to return them to get the halo lights. Well i haven't recieved them yet so I called the vendor and they told me that the order has not been processed yet. I was able to cancel the order before it was shipped. Saved the shipping and return fee 
Thanks again Bro