/6 198 rods needed badly
LOL, you could buy a 360, a used Edelbrock carb and a sb mopar transmission on craigslist for the cost of a set of rods & pistons, and it would be faster than your turbo slant.
Maybe; maybe not...
That depends on a lot of things... the amount of boost the six is running, the specifications of the 360...
Tom Wolfe ran a bone-stock 225 slant six with a Buick GN turbo, blowing thru a Holley 390cfm 4bbl. and as I said, that engine was otherwise STOCK, and with 20 pounds of boost, it ran 12.95 @ 104 in the quarter.
On the other hand, my (normally-aspirated) 360-Magnum powered '72 Valiant with a 360 Magnum engine (only modification was a Hugheserformance cam, valve springs and roller rockers, with early 340 manifolds and 2.25" exhaust,) ran 13.38 @ 102mph... so, don't be too sure the 360 will be faster... maybe mine was a dog, but the cam was mild (214/218 @ .050"-lift.) That was with a 750-Holley on an M-T intake manifold... 3,380 pounds without driver weight.
Engine swaps cost money... engine mounts, exhaust systems, intake manifolds and carbs, usually a bigger, stronger rear end, the usually-required, shorter driveshaft, and whatever engine modifications it will take to make it keep up with that turbo'd slant six... If that money were spent on the six, it would just get faster...
It's not really a slam/dunk to outrun a turbocharged slant six with a normally-aspirated small-block swapped into a 3,000-pound A-Body, I think. Especially, if you take the money spent on the swap and apply it to the six...
Just my 2-cents...