confused on blow through MAF or other?

i searched for this cause i remember a thread but i couldnt find it.

anyway, the one thing im still confused about is the MAF i need with my novi 2000 which is comming by summer i hope.

everyone has pointed me in the direction of the sct BA 2400 90mm maf.

this seems like the way i want to go. isee it will support well over the power im going to have.

QUESTION is this says "suck through" i assume this is what the centri blower needs, but what does this mean? what is the difference between suck through and blowthrough maf's?

thanks guys.

http://www.sctflash.com/shop/product_info.php?products_id=4

theres the link. 2 more things. in the paragraph it says supports 800 some hp but then under that it says 400-575 rwhp. right under that it says supports more on roots style blower. why? if anything i thought it would be opposite.

also it states that its a direct bolt on for lightnings and 03 cobras. what about my GT will it fit with the novi pipe and all?

so with the blower i want a suck through right?