I don't find my message from Peugeot-L anymore
I have digging this information years... gone trought massive amount of information sources.
These are options without any modifications to bearing holders
For Main bearing only alternative is Perkins Diesel engine 1.7L from 1958 ->
That bearing is too wide (31,88mm) and needs to be under size one.
(STD is 57.097-57.112mm) But size other ways is correct.
Originel bearing with is 24,67mm and holder is 27.8mm.
For ConRod only easy one is using Peugeot 205 (and talbot/simca) engine G1 G2 1309cc engine
mainbearings. Only problem is at there is 5 pairs in packet and only one pair is wide enough
so u need to buy 4 sets or use those narrow ones (18,5mm). Anyway those needs some modifications
also but wery minor ones (those wider ones are bit too wide to fit and lock pin is in wrong place).
I have done that ConRod thing for my monster engine with 4 sets of 205 bearings (did cost totally ~140e)
Reason was at main axcel was so good condition at I'didnt want to machine it so I did use std size.
Luckily I have many of those Original main bearing sets and also some original conrod sets (oversize).
And just for note. You can't use any other bearings (with close match) without fitting their outside size to mach bearing seat.
V-M