I want the SG for traction in lousy weather conditions, not for racing.
A SG , IMO, is a poor substitute for good tires.
On ice, or hard-packed snow, it can put you into the ditch in a heartbeat. Same when hydroplaning.
As soon as one tire looses grip back there, they both loose grip. And when that happens you only have milliseconds to correct before you are sideways, and on the way to spinning out. The best thing to do when you feel it, is to slam it into neutral, before lifting off the gas, and let the tires catch up; but you gotta be fast. Your hand has to already be on the shifter. That move has saved my bacon many dozens of times, perhaps hundreds of times in over 50 years of driving .
Other than for splitting the power on a dry paved surface,
about the only other thing a SG is good for is in mud/loose dirt, and for getting unstuck, if you end up in a snowbank.
However; With proper tires for the season, my 1980Volare, which I have had since 1994, I'm trying to remember if I ever got stuck with it...... but coming up empty............. hmmmmmmmm.
I think every car, or almost every car that I have had since about 1970, has had season specific tires all around, and most of the winter tires have been studded.
Oh yeah, I remember one time in the Volare. It was very cold out,like hi-30s below, and the third-winter studded winter tires were frozen hard. I wasn't stuck, but with just a lil snow in front of the front tires, she just couldn't get moving.
I remember now, calling in to work storm-stayed, and then later on, getting new tires,lol.
I can usually get at least two winters out of a set of rear winter tires, but after they go hard, (sometimes as early as the end of the first winter), and if they still have decent tread, I burn them off in summer. So some summers, my car might have summers on the front and winters on the rear. But if they were studded (usually are) I have extracted the studs for summer.
Oh yeah, I run oversize 15inch tires too,lol. 275/60s on the back in summers, and either 225/75s or 235/75s all around in winter. That stinking Volare, in second gear and humming along at 30/35mph , can bang thru miles and miles of bumper-deep drifts.
I have a SG for the 7.25, but have never installed it,lol.