We have more than a few cars running from 7seconds up running this type of set up, for years we have used this same style part on the 93+ Supras-Dodge SRT8's and many other cars. yes they are extremely strong and the plates are machined on center to with the 16mm pin that comes off both the trans and diff to ensure a
perfect alignment between them both.
p.s. we also have about 25 Honda-Pro cars running 8 second passes and almost every one has a small 4x100 bolt pattern, say what you want about them but a 26" tall tire doing 1.3 60ft times and a 8 second pass would ensure a smaller 4 bolt pattern is quite strong, not to mention the driveshaft is on the easy side of the Diff to turn.
