Attaching Highliner shells to a chassis?

I’m currently in the process of assembling some Highliner shells for use with a future passenger train. The instructions the kits come with have been very useful, however they don’t seem to make any mention of how best to attach to the shells to the locomotive chassis. Athearn’s F-units (which use the Highliner tooling) come with clear plastic clips that attach to indents on the chassis and also double as the porthole windows, but the kits don’t come with anything like that and I can’t seem to find any listings where I might be able buy them separately. I’m planning to use either Genesis or Intermountain chassis drives. I reached out directly on the Highliner website, but have yet to receive a response. What are my options for this? I’d like to stray away from any solutions directly involving adhesives or tape.

Glue some blocks of styrene to the inside of the shell and run screws through the frame of the chassis.The coupler mounting screws might be made long enough to hold the shell in place.
Mark Vinski

Here is a thread of interest:

https://forum.trains.com/t/ho-chassis-shell-interchangeability/310166/15

See Mel’s advice about using plastic nuts for this purpose. Mel was an excellent modeller…

Simon

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