difference between Fairlane and TL50 grilles

[mif73]

Hi guys, no time no post.
Anyhow I recently bought myself a new old stock TL50 grille surround for my S1 Lane and I have noticed some differences with the mounting method.
The Lane/LTD grille mounts are the same with the upper mounts on the radiator support and headlight brackets and the 2 lower tangs slotted into the lower slot in the headlight bracket.
The TL50 grille surround upper mounts are direct into the radiator support and it seems I have to drill 2 new holes for the outer mounts instead of the scrivet into the headlight bracket.
The TL50 grille surround has no lower tangs, how is this secured?

Would appreciate any advice or detailed pics, especially on an original TL grille.

Thanks in advance, Andrew.

PS, if you want a TL grille surround, they are on eBay at the moment, new old stock.