Poly Engine what was good/bad about it and why is the LA better?

Yes it was.

In the rock & roll era of the late 50s, early 60s we had an Aussie rock legend, Johnny O'Keefe. He had a 59 Belvedere & had a high speed head on crash with a truck. Everybody in the Bel survived, but O'Keefe had facial scars for life from the accident. They made a TV series of his life, & used Colin's 59 Bel for the filming.
Bewdy I remember that and colin said he gave them a basket case plymouth that they ran a bulldozer into to simulate the crashed car. While the film crew had his car one lunch time they sent a young guy down to the shops in it to get lunch and he ran off the road and damaged it. The repiared it before he got it back but it was a sub standard repair and the chassis was still bent. He asked me could I straighten out the chassis but I said I did not have access to the correct pulling gear so I don't know what he did at the time. I talk to his son Colin jnr from time to time and he has a convertibale plymouth he is saving up to do the body work on.