[DShip]

Keith,
The official name for the dogbone is "engine mount strut" and its part #17986841 for your 88 Reatta (according to the 86-93 Riviera/Reatta parts manual).

[Mike_s]

I've seen it listed as a Torque Strut Mount, or Torque Strut

[rjfranken]

Front engine strut mount or dog bone; also what he said. A weak front mount can make up some the difference you are seeing too. A history of an oil leak on it can make it pretty mushy.

The dog bone on my 89 is 4" bolt to bolt, but, the housing is 4 1/2' center to center. So the engine is leaning on it some. Look closer at the front mount under #1 plug with a jack for some play.

[Mike_s]

Most of the time when I can't get bolt holes to align up I go for my 16" pry bar with a long taper on one end and a small hook on the other. It's not a tool I use a lot, but it does come in handy. I think harbor freight has one for about $5.

[padgett]

And just for S&G the parts book says that E-bofies use the same strut from 1988-1993 (and possibly later). Meanwhile the 88 measures 4" even between the bolt centers and the 90 'vert, 4 1/4". If a bet were made, I'd go with the 88 since I recall replacing the original with one that matched.

I recall replacing the bushings for a Fiero (4 1/4") and while the old ones took some effort getting out, the new ones pressed in with a vice.

Now the 86 Fiero GT has a 4" strut, 87 4 1/4 this time there are two different part numbers.

So the only real answer is the $55 adjustable dogbone from Rodney Dickman.