That's impossible to know, some people only change the rods and bigend bearings.
A compression check whilst its still together would help make that decision,
It seems rude not to fit rings since its coming apart,
For the sake of and extra £60-£80 for a set of rings. I'm fitting Goatze rings to mine.
I won't be fitting it all until the summer..
I'm not an expert or anything, I have a few friends who will be lending a hand with the install.
Im away from home at the moment but as soon as I get back I'll post some pics of the rods.
There was a huge debate on FB about riffle drilled Vs Non and it seems most of those who were shouting that riffle drilled are the only rods to buy were the people who didn't have any kind of rods other than standard.
There is no denying that they are better, But is it as important as people make out?
Seems not as for every 1 person who posted stating they had riffle drilled, another 2 posted that they had non-drilled rods in their cars.
IE still sell Non-drilled rods, If they were that bad I really doubt a big name like IE would put their name on them.
It all comes down to budget, If you can spare £500 for a set of rods plus bearings and fitting kit then go for it.
I don't have that money so I bought these instead.