Paul,
So long as the radiator is in the standard position and the grille is also standard, the Spal 9" will fit. Make sure you mount it as low as possible, to avoid contact with the bonnet catch, when it closes.
I bought mine from a Spal agent - M Phillips. Very helpful. You will need a mounting kit as well, a Spal pin kit was £2.00 + VAT 5 years ago. This is a link to him:
http://www.mphillips.co.uk/index.htm Tel: 01823 273060
I don't know about the straight bladed version, but the curved one definitely is either suck or blow, not reversible.
I started with a Spal 7" and it was a bit marginal, so went for the higher performance version (curved blades) of the 9" to be sure. The total cost including pin kit, postage and VAT was £50.