Team Lotus & Reg Parnell Racing, 1966 season

[Mirage M6]

Hi everyone, Does anyone know what was the relationship between Team Lotus and Reg Parnell Racing during the 1966 F1 season?
I asked this because I've been reading some books and websites and I'm a little confused. Sometimes I can see Peter Arundell driving for Team Lotus, but then, for the last part of the season he is driving for Parnell. But in another sources I read that he drove for Team Lotus for all the season. The case of Pedro Rodríguez is very similar, I can not be sure if he drove for Team Lotus or Reg Parnell. I need your help!

[D-Type]

In championship races I have Arundell and Rodriguez driving all season for Team Lotus with a third car for 'Geki' in Italy. Mike Spence left Team Lotus and drove all season for Parnell. A second car entered at Monza for Baghetti. When the engine blew, Ferrari loaned him a Dino 246 which was still officially entered by Parnell. I'm not sure about non-championship events.
Possibly some compilers of websites have been confused because Spence sometimes drove the Lotus 43 with BRM H16 engine and sometimes a 33 with Climax engine and thought the latter were Parnell cars.