you bought the right ones!
finally got some time on the computer and looked some stuff up. you got the exact right mounts to use!
ill explain them for anyone who may find this thread i future:
Advanceadapters/James Duff sell these:
notice the shape and design... these mounts closely resemble stock replacment mounts for foxbody (1987-1993) mustang coupes, in fact some have said that is exactly what they are, stock replacments, repackaged and sold buy AA. they look like this: (image from partstrain.com)
most of the people you talk too/threads you read, will say that the convertible mounts are prefered because they are more sturdy:
(image1-partstrain, image 2-summit)
you can see the obviously sturdier construction on the convertible style mounts
anyway i hope this can help out any future swap'ers!
Matt
edit: i have looked around and the 200$ that AA/JD asks is REDICULOUS! the stock rubber replacement mounts AND transmission mount can be had for as little as 67$ all together!
and if you step up the the polyeurethane the set can be had on summitracing.com for 160$
Another edit: here is a pic that can help people rap there minds around this whole motor mount buisiness: