Miata Chevy 4.3L V6 Engine Swap

Was roaming the craigslist and found this: 1990 Mazda MX-5 Miata - Chevrolet 4.3L V6 Engine Swap - $5900 (Marietta), https://atlanta.craigslist.org/nat/cto/5160254253.htmlhttp://images.craigslist.org/01616_4...eJ_600x450.jpghttp://images.craigslist.org/00N0N_6...jB_600x450.jpghttp://images.craigslist.org/00g0g_d...z5_600x450.jpg

he didn't have the HP posted in the AD, I emailed and asked him & this is info he emailed me = " It's a fairly stock 4.3, bored over .040, 3.8 heads for higher compression, small cam, Performer RPM intake, 500 cfm carb. I'd say between 200 and 250 hp to be conservative. The body has 189k on it, the engine probably about 30k since the rebuild, tranny not sure, but it's fresh and solid especially in this light car." Was curious, don't know a lot about V6 or V8 swaps. Why do a V6 swap anyway? What do you guys think?