Phatdaddy, all 150 - 200 hp most likely will work and by the way, I was able to save the front cover. Some have SS vents towards the front, but as long as they look like this, they will fit.
On the older model 78-81, the front latch was stainless steel, the newer were plastic.
Thanks!
These were the ones I had, but then again, I think the SS vents are an after market for improved carb air.