Mechanically there is little difference between the Series 3 and Series 2/2a, the major difference being that almost all Series 2as have a Rover rear axle rather than the salisbury and the gearbox. The major likely problem should be solved with the new chassis, but a close scrutiny of the firewall would be a good idea.
Apart from this it is pretty much a matter of condition, as with any car that is nearly fifty years old.
The Valiant engine conversion is unusual, although it is quite a satisfactory engine, and it is worth getting all the information you can on the conversion.
The 2a gearbox is generally considered to be more robust than the Series 3 gearbox, but of course has synchromesh only on top and third. And the 1964 box was not the best one.
A minor difference from Series 3 is that the wheel studs are screwed in and staked from the rear, and commonly loosen, and screw out, damaging the threads in the hub. While not a particularly expensive repair by drilling out and replacing the studs with later pull in ones, it is a bit of work.
Series 2/2a wiring is even simpler than the Series 3, is largely unfused, and is very likely to be either in a pretty bad state or badly bodged. If either of these apply, then a new harness (readily available) is pretty expensive and quite a lot of work to fit, although it is not impossible to make one yourself - a search will find a current thread on this.
You implied that you are familiar with Series 3 so I have concentrated on the differences.
John
John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
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