I bet those of us old enough said that about 1100 Mk 1 Escorts back in the day too.I agree that only the 2.8/3.0 and m will go up.
Just more desirable. All the lower engines that are sports will get broke for parts as strangely they are worth more in bits than whole
My 2.2 is only valued at £1500 max to sell private as I've been offered just less than that a couple of times by breakers. Just for parts as car itself isn't very good