Thunderwolf and Primaris scout combo?

[Brother Harnil]

Not rules/play related but I finally got around to bring my thunderwolves down from sprue mountain and build them.

 

Now I find the original first born look silly in comparison to all the new stuff and the scouts I built lately size up better. I'm getting visions of a very fast, very stealthy group of murder things with light armoured other murder things riding them.
Does anyone has any tips on how to make them compatible (if at all?). A bit anxious to start cutting up models, I'm not the best at heaps of green stuff...

[sbarnby71]

I did a Reiver on a thunderwolf a few years back. You need to cut the legs from either side of the groin to make them straddle properly, then cut out the ribbed bits behind the knees to get the bend you'd want. It sort of helps to cut the knee pad off so you can reposition it. It took a fair bit of work but it was worth it.