Put them in. I am 95% sure they will fit.
The only possible hurdle could be the diameter of the RA40 spring seat being too large for the strut tower. Then again, that could be just me being skeptical.
If all else fails there's still ground to be made. If you've pulled a stock strut out, found out the RA40 one won't fit, then take a photo of the two side by side. Notice how there will be an absolutely negligible difference in length - no worse than converting to xT13x Struts - which has no repercussions. Go The RA40 gear, and benifit from having a strut that will take a 2" dia shock.