No worries with the iso itself if opened up to 1/2''

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Mithered ta death.
92 MB
96 S2T
98 S1W
00 M2
01 X1
03 P3
10 CR

Yep i fitted new iso after reaming hole to half inch over 10k miles ago and still ok
A little more vibes at idle smoother everywhere else (old un was knackered and it did break left top mount bolt, new billet top mount everything fine)
Did manage to get broken bolt out in situ How Lucky

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X1 Whitelightning 2002
S3T 2000
Montessa Cota 349 1982
Kawasaki Hardtail 1983
Beta rev3 250

nothing is designed to last any more ,a ten year old car that needs a 600 pound clutch and the engine out to fit is dog food, years ago a car was repaired till it fell off the road ,fancy gadgets is more expense when they fail erg valves for instance , i much prefer old and reliable