Since I have no pics, if you look top down at your figure this is what it would look like...
------BWR------
---/-Spoiler-\--
W|-|-TWR-|-|W
---|-|--------|-|
---\-|--------|-/
--S\|---H---|/S
BWR is Bottom of Wave Rider TWR is Top of Wave Rider...
The two W are the wheels the two S are the shoulders and H is obviously the head. Crappy diagram I know.

If you have trouble sliding the W.R. into the back you can actually remove the rear spoiler just quite easily by popping it out fyi.
Once again if this has already been mentioned which it probably has sorry but just incase just felt like sharing.